<template>
	<view>
		<view class="goods-list">
			<!-- block没有click事件 -->
			<view v-for="(goods, i) in goodsList" :key="i" @click="gotoGoodsDetail(goods.goods_id)">
				<my-goods :goods="goods"></my-goods>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				queryObj: {
					// 查询关键词
					query: '',
					// 商品分类id
					cid: '',
					pagenum: 1,
					pagesize: 10
				},
				goodsList: [],
				total: 0,
				// 节流阀
				isloading: false
			};
		},
		onLoad(options) {
			// console.log(options);
			this.queryObj.query= options.query || ''
			this.queryObj.cid = options.cid || ''
			// console.log(this.queryObj);

			// 获取商品列表
			this.getGoodsList()
		},
		methods: {
			async getGoodsList(cb) {
				// 打开节流阀
				this.isloading = true
				const {data: res} = await uni.$http.get('/api/public/v1/goods/search', this.queryObj)
				// 关闭节流阀
				this.isloading = false
				// 数据请求完毕，立即按需进行调用
				cb && cb()
				
				// console.log(res);
				if(res.meta.status != 200) return uni.$showMsg()
				// this.goodsList = res.message.goods
				// 为数据赋值，通过展开运算符，进行新旧数据拼接
				this.goodsList = [...this.goodsList, ...res.message.goods]
				this.total = res.message.total
			},
			gotoGoodsDetail(id) {
				uni.navigateTo({
					url: '/subpkg/good_detail/good_detail?goods_id=' + id
				})
			}
		},
		// 上拉加载
		onReachBottom() {
			// 判断是否还有下一页数据
			if(this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕')
			// 根据节流阀判断是否发起请求
			if(this.isloading) return
			// 页码自增+1
			this.queryObj.pagenum += 1
			// 重新获取列表数据
			this.getGoodsList()
		},
		// 下拉刷新
		onPullDownRefresh() {
			// 1. 重置关键数据
			this.queryObj.pagenum = 1
			this.total = 0
			this.isloading = false
			this.goodsList = []
			// 2. 重新发起请求
			this.getGoodsList(() => uni.stopPullDownRefresh())
		}
	}
</script>

<style lang="scss">

</style>
